When /?2 is the rotor resistance, .X2 the rotor reactance at supply frequency and s the slip, then the condition for maximum torque under running conditions will be_____________?
Correct answer: C. R2 = sX2
- A. sR2X2 = 1
- B. sR2 = X2
- C. R2 = sX2
- D. R2 = s2X2
Explanation
For maximum torque during running, the slip-dependent rotor reactance equals the rotor resistance: sX2 = R2. Rearranging gives R2 = sX2, so option c is correct.
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